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Intraocular osseous metaplasia. A clinico-pathological study
Geeta K Vemuganti1, Santosh G Honavar, Subhadra Jalali
1Ophthalmic Pathology Division, L.V. Prasad Eye Institute, L V Prasad Marg, Banjara Hills, Hyderabad-500 034, India. geeta@lvpeye.stph.net
Indian Journal of Ophthalmology
|October 3, 2002
Summary
Intraocular osseous metaplasia, a rare condition, was found in 5.2% of enucleated eyes. Associated features include retinal detachment and pigment epithelial hyperplasia, with ossification occurring subretinally or preretinally.
Area of Science:
- Ophthalmic pathology
- Histopathology
- Cellular metaplasia
Background:
- Intraocular osseous metaplasia is a rare condition involving bone formation within the eye.
- Understanding its clinico-pathologic features is crucial for diagnosis and management.
Purpose of the Study:
- To evaluate the clinico-pathologic features of intraocular osseous metaplasia.
- To identify associated histopathologic findings and clinical diagnoses.
Main Methods:
- Retrospective analysis of 151 enucleated eyes over a 4.5-year period.
- Histopathologic examination for osseous metaplasia and associated features (retinal detachment, gliosis, RPE hyperplasia, drusen, inflammation).
- Immunohistochemistry for glial component assessment and clinical record review.
Main Results:
- Osseous metaplasia identified in 8 eyes (5.2%).
- Commonly associated findings: retinal detachment, gliosis, retinal pigment epithelial hyperplasia (all cases).
- Other features: calcified drusen (5/8), fibrovascular proliferation (5/8), inflammation (4/8); ossification locations varied (subretinal, preretinal, or both).
Conclusions:
- Chronic retinal detachment, hyperplasia, and retinal pigment epithelium transdifferentiation are potential prerequisites for intraocular osseous metaplasia.
- Ossification can be isolated or involve multiple locations.
- Subretinal ossification may arise from calcified drusen, while preretinal ossification is linked to vitreoretinal proliferation.